After a massive explosion seals both ends of New York's Holland Tunnel (The Tunneling Inferno?), a small band of stock disaster flick survivors are trapped under the waters of the Hudson River. Fortunately, a cab driver with a really square jaw who, conveniently, is an ex-emergency rescue worker AND who knows the entire layout of the tunnel happens to be driving toward the tunnel at the exact moment of the disaster. Coincidence? Nope, just Hollywood. Kit Latura (Stallone) leads the survivors through cave-ins, floods, fire, rats, and poison gas (The Poison-Hiding Adventure!) only to discover to their dismay that they have emerged in New Jersey. Long on special effects but short on character development, this nod to the catastrophe movies of the '70s is still enjoyable for those who like to watch things go boom.